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    ITU-T Y 3100-2017 Terms and definitions for IMT-2020 network (Study Group 13).pdf

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    ITU-T Y 3100-2017 Terms and definitions for IMT-2020 network (Study Group 13).pdf

    1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Y.3100 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2017) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Future networks Terms an

    2、d definitions for IMT-2020 network Recommendation ITU-T Y.3100 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications and mi

    3、ddleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications Y.1

    4、100Y.1199 Architecture, access, network capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 IPTV

    5、 over NGN Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2

    6、250Y.2299 Enhancements to NGN Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Packet-based Networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.3499 CLOU

    7、D COMPUTING Y.3500Y.3999 INTERNET OF THINGS AND SMART CITIES AND COMMUNITIES General Y.4000Y.4049 Definitions and terminologies Y.4050Y.4099 Requirements and use cases Y.4100Y.4249 Infrastructure, connectivity and networks Y.4250Y.4399 Frameworks, architectures and protocols Y.4400Y.4549 Services, a

    8、pplications, computation and data processing Y.4550Y.4699 Management, control and performance Y.4700Y.4799 Identification and security Y.4800Y.4899 Evaluation and assessment Y.4900Y.4999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.3100 (09/2017) i Recommendat

    9、ion ITU-T Y.3100 Terms and definitions for IMT-2020 network Summary Recommendation ITU-T Y.3100 describes essential terms and their definitions for IMT-2020 network to provide a general common understanding for ITU-T IMT-2020 related standard documents. It can be used as a guideline for the further

    10、development of IMT-2020 related documents. The terms defined in this Recommendation will constitute a reference for other ITU-T IMT-2020 related standard documents. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Y.3100 2017-09-13 13 11.1002/1000/13349 Keywords IMT-2020, def

    11、initions, network slice, network softwarization, orchestration, terms. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T Y.3100

    12、 (09/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsib

    13、le for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T

    14、 study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative b

    15、asis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandato

    16、ry provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The

    17、use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes n

    18、o position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property,

    19、 protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No

    20、part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.3100 (09/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviat

    21、ions and acronyms 4 5 Conventions 4 Bibliography. 5 Rec. ITU-T Y.3100 (09/2017) 1 Recommendation ITU-T Y.3100 Terms and definitions for IMT-2020 network 1 Scope This Recommendation contains common terms and definitions to provide a general understanding for IMT-2020 standard documents and a guidelin

    22、e for the development of IMT-2020 related documents. This Recommendation provides terms and definitions, which are considered particularly suitable and applicable to the development of IMT-2020 standard documents and have already been defined in published ITU-T Recommendations and other relevant spe

    23、cifications. New terms are also defined as required in this Recommendation. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated

    24、 were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recomm

    25、endations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T Y.1714 Recommendation ITU-T Y.1714 (2009), MPLS management and OAM framework. ITU-T Y.2011 Recommendation ITU-T Y.2011 (2004), G

    26、eneral principles and general reference model for Next Generation Networks. ITU-T Y.2012 Recommendation ITU-T Y.2012 (2006), Functional requirements and architecture of the NGN release 1. ITU-T Y.3011 Recommendation ITU-T Y.3011 (2012), Framework of network virtualization for future networks. ITU-T

    27、Y.3300 Recommendation ITU-T Y.3300 (2014), Framework of software-defined networking. ITU-T Y.3321 Recommendation ITU-T Y.3321 (2015), Requirements and capability framework for NICE implementation making use of software-defined networking technologies. ITU-T Y.4406 Recommendation ITU-T Y.4406/Y.2016

    28、(2009), Functional requirements and architecture of the NGN for applications and services using tag-based identification. ITU-R M.2083-0 Recommendation ITU-R M.2083-0 (2015), IMT Vision Framework and overall objectives of the future development of IMT for 2020 and beyond. 3 Definitions 3.1 Terms def

    29、ined elsewhere This Recommendation uses the following terms defined elsewhere: 2 Rec. ITU-T Y.3100 (09/2017) 3.1.1 control plane ITU-T Y.2011: The set of functions that controls the operation of entities in the stratum or layer under consideration, plus the functions required to support this control

    30、. 3.1.2 data plane ITU-T Y.2011: The set of functions used to transfer data in the stratum or layer under consideration. NOTE In the ITU-T IMT-2020 related standard documents, User plane is used preferentially rather than Data plane. 3.1.3 functional architecture ITU-T Y.4406: A set of functional en

    31、tities used to describe the structure of an NGN. These functional entities are separated by reference points, and thus, they define the distribution of functions. The functional entities can be used to describe a set of reference configurations. These reference configurations identify which referenc

    32、e points are visible at the boundaries of equipment implementations and between administrative domains. 3.1.4 logical resource ITU-T Y.3011: An independently manageable partition of a physical resource, which inherits the same characteristics as the physical resource and whose capability is bound to

    33、 the capability of the physical resource. NOTE “independently“ means mutual exclusiveness among multiple partitions at the same level. 3.1.5 management plane ITU-T Y.2011: The set of functions used to manage entities in the stratum or layer under consideration, plus the functions required to support

    34、 this management. 3.1.6 network virtualization ITU-T Y.3011: A technology that enables the creation of logically isolated network partitions over shared physical networks so that heterogeneous collection of multiple virtual networks can simultaneously coexist over the shared networks. This includes

    35、the aggregation of multiple resources in a provider and appearing as a single resource. 3.1.7 software-defined networking ITU-T Y.3300: A set of techniques that enables to directly program, orchestrate, control and manage network resources, which facilitates the design, delivery and operation of net

    36、work services in a dynamic and scalable manner. 3.1.8 user plane ITU-T Y.1714: Refers to the set of traffic forwarding components through which traffic flows. NOTE “User plane“ is referred to as “transport plane“ in other ITU-T Recommendations. 3.1.9 virtual resource ITU-T Y.3011: An abstraction of

    37、physical or logical resource, which may have different characteristics from the physical or logical resource and whose capability may be not bound to the capability of the physical or logical resource. 3.1.10 virtualized network function ITU-T Y.3321: A network function whose functional software is

    38、decoupled from hardware, and runs on virtual machine(s). 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 backhaul: A network path between base station systems and a core network. 3.2.2 evolved IMT-advanced RAT: The enhanced version of IMT-advanced radi

    39、o access technologies (RAT). NOTE IMT-advanced is the ITUs official terminology for so-called LTE-advanced. 3.2.3 fixed mobile convergence: In the context of IMT-2020, the capabilities that provide services and applications to end users regardless of the fixed or mobile access technologies being use

    40、d and independently of the users location. 3.2.4 fronthaul: A network path between centralized radio controllers and remote radio units of a base station function. Rec. ITU-T Y.3100 (09/2017) 3 3.2.5 functional entity: (Based on the definition given in ITU-T Y.2012) An entity that comprises an indiv

    41、isible set of specific capabilities. Functional entities are logical concepts, while groupings of functional entities are used to describe practical, physical implementations. 3.2.6 IMT-2020: (Based on ITU-R M.2083-0) Systems, system components, and related aspects that support to provide far more e

    42、nhanced capabilities than those described in b-ITU-R M.1645. NOTE b-ITU-R M.1645 defines the framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000 for the radio access network. 3.2.7 management: In the context of IMT-2020, the processes aiming at fulfilme

    43、nt, assurance, and billing of services, network functions, and resources in both physical and virtual infrastructure including compute, storage, and network resources. 3.2.8 network function: In the context of IMT-2020, a processing function in a network. NOTE 1 Network functions include but are not

    44、 limited to network node functionalities, e.g., session management, mobility management and transport functions, whose functional behaviour and interfaces are defined. NOTE 2 Network functions can be implemented on a dedicated hardware or as virtualized software functions. NOTE 3 Network functions a

    45、re not regarded as resources, but rather any network functions can be instantiated using the resources. 3.2.9 network slice: A logical network that provides specific network capabilities and network characteristics. NOTE 1 Network slices enable the creation of customized networks to provide flexible

    46、 solutions for different market scenarios which have diverse requirements, with respect to functionalities, performance and resource allocation. NOTE 2 A network slice may have the ability to expose its capabilities. NOTE 3 The behaviour of a network slice is realized via network slice instance(s).

    47、3.2.10 network slice blueprint: A complete description of the structure, configuration and work flows on how to create and control a network slice instance during its life cycle. NOTE A network slice template can be used synonymously with a network slice blueprint. 3.2.11 network slice instance: An

    48、instance of network slice, which is created based on a network slice blueprint. NOTE 1 A network slice instance is composed of a set of managed run-time network functions, and physical/logical/virtual resources to run these network functions, forming a complete instantiated logical network to meet c

    49、ertain network characteristics required by the service instance(s). NOTE 2 A network slice instance may also be shared across multiple service instances provided by the network operator. A network slice instance may be composed of none, one or more sub-network slice instances which may be shared with another network slice instance. 3.2.12 network softwarization: An overall approach for designing, implementing, deploying, managing and maintaining network equip


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